package example.method.p09;

/**
 * @author 17976
 */
public class Main {
    public static void main(String[] args) {
        StringBuffer searchstr = new StringBuffer("hello how are you. ");
        int length=searchstr.length();
        int count=0;
        for (int i=0;i<length;i++) {
            if(searchstr.charAt(i) !='h'){
                continue;
            }
            count++;
            searchstr.setCharAt(i, 'h');
        }
        System.out.println("发现"+count+"个h字符");
        System.out.println(searchstr);
    }
}
